CVE-2026-47752

Tugtainer has Server-Side Template Injection in notification templates that leads to Remote Code Execution

State: Published
Severity: 9.9 Critical
Published: Jul 23, 2026
Updated: Jul 23, 2026
Reserved: May 19, 2026

Description

Tugtainer is a self-hosted app for automating updates of Docker containers. Versions prior to 1.30.2 are vulnerable to Server-Side Template Injection (SSTI) in the notification template feature. The `title_template` and `body_template` fields are rendered using an unsandboxed `jinja2.Environment`, allowing any authenticated user to execute arbitrary OS commands as root inside the container. Version 1.30.2 fixes the issue.

Scores

CVSS	Score	Vector	Source
3.1	9.9 Critical	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-1336 Improper Neutralization of Special Elements Used in a Template Engine

Affected Products

Product	Versions
tugtainerQuenary	< 1.30.2Affected

References

https://github.com/Quenary/tugtainer/security/advisories/GHSA-g2cj-2x47-78vq

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